Valves and valve actuation – With means for blocking or disabling actuator – Released by non-valving actuator motion
Patent
1974-06-21
1976-05-11
Klinksiek, Henry T.
Valves and valve actuation
With means for blocking or disabling actuator
Released by non-valving actuator motion
251 96, F16K 3504
Patent
active
039557936
ABSTRACT:
A valve stem system is described for use in submerged oil and/or gas production systems designed to improve the reliability of subsea valves. A remotely rotatable pressure cap is threadedly engagable onto and removable from a valve bonnet which is mounted on a valve. The valve bonnet surrounds one section of the valve stem of the valve and forms a metal-to-metal seal with the cap when the cap is threadedly made up on the valve bonnet. Another section of the valve stem extends into the cap. A spline is arranged on that section of the valve stem. A spline clutch is arranged on the interior of the cap and is engagable with the spline of the valve stem to cause, when engaged, rotation of the valve stem upon rotation of the cap. A coil spring is arranged within the cap to push or urge the spline clutch into engagement with the valve stem spline when the cap is removed from the valve bonnet. Bearings arranged between the valve bonnet and the valve stem permit rotation of the valve stem relative to the valve bonnet. The sections of the valve stem may be separate members and a detent clutch arrangement may be used to connect these sections in order to limit overtorquing of the valve stem and associated valve. The pressure cap is rotated by a manipulator effector which rotates an extension shaft connected to the pressure cap.
REFERENCES:
patent: 881060 (1908-03-01), Cook
patent: 1795839 (1931-03-01), Credle
patent: 3272224 (1966-09-01), Wrenshall
patent: 3529805 (1970-09-01), Callahan et al.
patent: 3773080 (1973-10-01), Raschke
patent: 3788600 (1974-01-01), Allen
Burkhardt Joseph A.
Childers Thomas W.
Exxon Production Research Company
Klinksiek Henry T.
Schneider John S.
LandOfFree
Valve stem static seal system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve stem static seal system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve stem static seal system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1298464